Nobris peters co



(no Model.) M. D. CONVERSE.

PIVOTED TOOL.

No. 584,924. Patented June 22,1

WWI mow I UNITED STATES PATENT OFFICE.

MASOl-IIL D. CONVERSE, OF NEW YORK, N. Y., ASSIGNOR TO THOMAS F.STEVENSON, OF SAME PLACE.

PIVOTED TOOL.

SPECIFICATION forming part of Letters Patent No. 584,924, dated June 22,1897.

Application filed April 12, 1897. Serial No. 631,880. (No model.)

with such a form of spring and adapted means for retaining the same thatthe former may be easily applied in the manufacture and that whileaccessible is yet well protected when in place against derangement fromextraneous causes and may also readily and at trifling cost be replacedby a new one should it fail in any way, which object I attain by thedevices hereinafter fully described and claimed.

In the drawings, Figure 1 is a side elevation of my invention as itwould appear applied in common spring-pliers. Fig. 2 is an edge view ofpart of the arm of the pliers, showing one form of part of my inventionbefore the spring is inserted. Figs. 3 and 4c are exaggeratedperspective views illustrating other features of my invention.

Details of the several figures will hereinafter be more fully described.

Like letters indicate corresponding parts in the several figures.

A and B are the respective arms or halves of a pair of pliers, and D isthe pivotal bolt or rivet securing the same.

O is a depression in the side of the arm A, having a shoulder at h andthe lips e c on either side of said depression.

dis a spring (usually made of round spring- Wire) bent to a form likethe letter J, resting flatwise in said depression, with its free endengaging the notch f in the circumference of the hub portion of and toactuate the part B of the pliers and with its other curved confined endjust under and in. contact with the shoulder h and held in place by lipse e, which are turned down over the same for a portion of its length andalong the margin of the depression O. This spring is slightly kinked orbent away from the side of its curved portion, as shown at d, to give aslight opposing stiffness at this point and a better angle contact forthe end of the spring with notch f.

In practice the depression O and spring-retaining lips e 6 may be castor forged to the forms shown in Figs. 1 and 4: before inserting thespring, which can afterward be readily sprung into place under them, orthese lips e 6 may be cast or forged to the form and position shown inFigs. 2 and 3 and bent inward over the spring after the latter isinserted.

g, in Fig. 1, shows in dotted lines the position of spring d when thepliers are closed, as represented in dotted outlines.

The spring, by contact of its confined end with the shoulder h, is keptfrom working forward too far into the notch f and from thus interferingby binding or friction on the bottom of said notch with the free actionof the part B.

Those skilled in the art will clearly understand from the foregoingdescription that my invention provides an efficient spring and readymeans for putting the same in place originally and for inserting a newone, if required, and at the sametime, by means of the depression 0,provides protection for the spring against breakage from externalaccidental causes.

IIaving described my invention, What I claim as new, and desire tosecure by Letters Patent, is

The herein-described improvement in pivoted tools of the class referredto, comprising a depression provided with a shoulder, h, in the side ofan arm of the tool, a notch, f, in the adjacent hub portion of theopposite arm, and a suitable J-shaped spring with a kink, d, held inplace in said depression by retaining-lips, e e, the free end thereofengaging notch f, and its curved, confined end in contact with saidshoulder, h, substantially as and for the purposes shown and described.

MASCHIL D. CONVERSE.

WVitnesses:

SAML. A. DRURY, E. F. OAVERLY.

